flow of capital flow of chi flow of combustion flow of communication flow of control flow of cooling flow of current flow of data flow of electric flow of electricity flow of electrons flow of energy flow of events flow of fluid flow of fluids flow of foreign flow of fresh flow of fuel flow of funds flow of gas flow of goods flow of heat flow of hot flow of hydraulic flow of ideas flow of illegal flow of income flow of information flow of knowledge flow of life flow of light flow of liquid flow of love flow of material flow of materials flow of migrants flow of money flow of new flow of nitrogen flow of oil flow of oxygen flow of patients flow of people flow of power flow of product flow of refrigerant flow of refugees flow of steam flow of the air flow of the fluid flow of the game flow of the liquid flow of the river flow of the water flow of things flow of time flow of tourists flow of trade flow of traffic flow of urine flow of visitors flow of water flow of work flow only flow opening flow outlet flow parameters flow passage flow passages flow past flow path flow paths flow pattern flow patterns flow pipe flow planning flow position flow pressure flow probe flow problem flow problems flow proceeds flow process flow profile flow properties flow pump flow range flow rate flow rate can flow rate control flow rate may flow rate regulator flow rates flow ratio flow reactor flow reactors flow reducing flow reduction flow regime